Machine for rolling pipe-couplings



PATENTED JAN. 5, 1904. H. W. & J. A. HOGK. FOR ROLLING PIPE COUPLINGS, 8w. APPLIGATION IILED NOV. 3. 1902.-

2 SHEETS-S11E31 2.

I ELK human No. 748,948. PATENTED JAN. 5,1904,

' H. w. & J. A.-HOGK.

MACHINE FOR ROLLING PIPE COUPLINGS, 820.

APPLICATION FILED NOV. 3. 1902.

2 SHEETS-SHEET 1.

H0 MODEL.

f) (9 E Q/vmmm H 4 invention.

UNITED STATES Patented January 5, 1904.

Pnrnnm MACHINE FOR. ROLLING PIPE-COUPLINGS, 80c.

SPECIFICATION formingpart of Letters Patent No. 748,948, dated January 5, 190%. Application filed November 3,1902. Serial No. 129,841. (No model.)

To all whom it may concern:

Be it known that we, HENRY W. HOOK and J OHN'A. HOOK, citizens of the United States,

both residing in the city of Youngstown, State and partial sectional view of rolls employed for forming pipe-couplings embodying our Fig. 2 represents a side elevation of rolls for making a slightly-difierent form of coupling. elevation and partial sectional View of a portion of rolls employed for making another form of coupling.

a portion of rolls, showing means for forming screw-threads therein. Fig. 5 ,repre'sents a partial side elevation and partial sectional sponding parts in the figures.

Referring to the drawings, A and B designate rolls to which power is imparted in any suitable manner, said rolls having the usual bearing-faces O and D and the faces E, of

smaller diameter than the bearing-faces O and D, the surface of the rolls between said faces E being connected therewith by the curve G.

H and J designate the two members of the mandrel employed, one member, H,- of which having a. nose K thereon, adapted to enter the recess L in the other member, J, the latter having any suitable mechanisms connected therewith for moving the same by making the mandrel in two parts to facilitate its application to its proper position and also its manufacture.

M and N designate bearing-faces on the members H and J, respectively, and upon which the bearing-faces G and D of the rolls Fig. 3 represents a partial side' Fig. 4 represents a partialside elevation and a partial sectional view of are adapted to move when the parts are in operative position.

P designates faces on members of the mandrel upon which thefaces E of the rolls move,

the surface Q of the'mandrel being between the said faces P and being of less diameter than said faces P and opposite the surface F of the rolls, it being seen that a space R is left between the rolls and the mandrel, which space is of the shape it is desired to make the pipe-couplings. In Fig. 1 we have formed the faces P wider than the faces E, so that a space S is left between the faces P and the surface F, thus forming a coupling, as shown by the shape of the space. In Fig. 2 we have shown the faces Pconnected with the surface Q by the incline T, While in Fig. 3 we have shown the adjacent ends of the mandrel mom hers inclined in opposite directions toward the center, while the faces P are wider than the faces E-and are connected with the surface Q by the curve U.

Fig. 4 shows a mandrel having screw". threads V thereon for forming threads on the interior of the couplings, the mandrel in this case having the squared ends W for engagement by a key A.

The operation is as follows: The lower rolls are adapted to be moved away from the mandrel after the coupling is formed, after which the mandrel can be lowered to remove the same from the upper rolls,'and thus remove the coupling. The parts being in the position seen in Fig. 1, motion is im parted to the rolls in any suitable manner and the metal is fed in between the same and the mandrel, it being seen that the coupling will be formed in the shape shown. It will be evident from the figures shown that the same operation is applicable to the various constructions and that we are enabled by the same to make in the same operation a finished coupling hav-' ing a countersink on the inside ends of some sockets, or a recess cut in some, or to have them tapered from both ends and form threads in the sockets while we are making the couplings. 7

It will be evident that various changes may be made by those skilled in the art which will come within the scope of our invention, and we do not, therefore, desire to be limited in every instance to the exact construction herein shown and described, but desire to make such changes as will come within the scope of our invent-ion.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In a device for rolling pipe-couplings, &c., rolls and a sectional mandrel, said rolls and sectional mandrel each being provided with coacting flanges, said flanges being located in relation to each other to cause the locking together or holding in place of the sectional mandrel during the rolling action.

2. In a device for rolling pipe-couplings, &c., rolls and a sectional mandrel, each having a plurality of sets of coacting flanges, the bearing-faces of the flanges of the rolls abutting against and coacting with the bearing-faces of the flanges upon the mandrelsections, whereby said sections during the operation of forming a coupling may be held in proper place by the flanges of the rolls, the second set of bearing-faces on the mandrel being wider than the corresponding set of bearing-faces on the rolls.

3. In a device for rolling pipe-couplings, &c., rolls and a sectional mandrel, each having a plurality of sets of coacting flanges, the bearing-faces of the flanges of the rolls abutting against and coacting with the bearingfaces of the flanges upon the mandrel-sections, whereby said sections during the operation of forming a coupling may be held in proper place by the flanges of the rolls, the second set of bearing-faces on the mandrel being wider than the corresponding set of bearing-faces on the rolls, said mandrel having oppositely-disposed inclines, and its sections having interengaging members.

4. In a machine for rolling pipe-couplings, &c., rolls and a sectional mandrel, the said rolls and mandrel each having coacting flanges forming bearing-faces oppositely disposed and serving to hold the sections of the mandrel in placeduring the operation of forming-a coupling and separation of the rolls permitting the separation of the sections of the mandrel for discharging the coupling, the said mandrel-sections having interengaging portions.

-5. In a machine for rolling pipe-couplings, &c., rolls and a sectional mandrel disposed between said rolls,said rolls and mandrel each provided with shoulders and coacting flanges constituting bearing-faces oppositely disposed and serving to hold the sections of the mandrel in place during the operation of forming a coupling and separation of the rolls permitting the separation of the sections of the mandrel for discharging the coupling, the rolls having their central portions of smaller diameter than their bearing-faces and the mandrel having its bearing-faces wider than the coacting faces of the rolls to form countersinks in the inside ends of the couplings.

ing-faces wider than the coacting faces of 1 the rolls, and the said faces and reduced portion being connected by inclined portions.

7. In a machine for rolling pipe-couplings, 850., a sectional mandrel, rolls upon opposite sides of said mandrel, said rolls and mandrelsections each having coacting flanges disposed in relation to each other to cause the locking together or holding in place of the sectional mandrel during the rolling action, and means on said rolls and mandrel for forming a recess in the coupling.

8. In a machine for rolling pipe-couplings, &;c., a roll and a cooperating sectional mandrel provided with means for forming screwthreads in the couplings, the rolls and mandrel-sections being provided with coacting flanges disposed in relation to each other to cause the locking together or holdingin place of the mandrel-sections during the operation of forming a coupling by said flanges.

9. In a machine for rolling pipe-couplings, &c., a roll and a cooperating sectional mandrel provided with means for tapering the couplings from opposite ends and for forming screw-threads thereon, said roll and mandrel-sections being provided with coacting flanges disposed to cause the locking together or holding in place of the mandrel-sections during the rolling action.

10. In an apparatus for welding and shaping pipe-couplings or similar articles, the combination of a central mandrel and a cluster of rolls surrounding the same, said rolls having flanges at each end adapted to contact with the mandrel and confine the blank, said mandrel of separable interengaging sections corresponding in diameter to the interior of the article to be formed and having a portion of enlarged diameter at one end projecting into the pass of the rolls, and cooperating annular shoulders on the mandrel one on each section and rolls to prevent endwise movement of the mandrel during the welding and shaping operation.

11. In an apparatus for welding and shaping pipe-couplings or similar articles, the combination of a central mandrel and a cluster of rolls surrounding the same, said rolls having flanges at each end adapted to contact with the mandrel and confine the blank, said mandrel of separable interengaging sections corresponding in diameter to the interior of the article to be formed and having a portion of enlarged diameter at one end projecting into the pass of the rolls, square inwardly-facing shoulders on the rolls, and a square outwardly-facing shoulder on each section of the mandrel contacting with the shoulders on the rolls and adapted to prevent endwise movement of the mandrel during the welding and shaping operation.

HENRY W. HOGK. JOHN A. HOOK.

Witnesses:

- T. F. MOORE, E. F. KANE. 

